An engineer wants to design a circular racetrack of radius R such that cars of mass m can go around the track at speed U without the aid of friction or other forces other than the perpendicular contact force from the track surface. Find an expression for the required banking angle 0 of the track, measured from the horizontal. Express the answer in terms of m, R, U, and g. Suppose the race cars actually round the track at a speed W > U. What additional radial force F, is required to keep F, = the cars on the track at this speed? Express the answer in terms of m, R, U, W, and g.

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Author:William Moebs, Samuel J. Ling, Jeff Sanny
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An engineer wants to design a circular racetrack of radius
R such that cars of mass m can go around the track at speed
U without the aid of friction or other forces other than the
perpendicular contact force from the track surface.
Find an expression for the required banking angle 0 of the
track, measured from the horizontal. Express the answer in
terms of m, R, U, and g.
Suppose the race cars actually round the track at a speed
W > U. What additional radial force F, is required to keep
F, =
the cars on the track at this speed? Express the answer in
terms of m, R, U, W, and g.
Transcribed Image Text:An engineer wants to design a circular racetrack of radius R such that cars of mass m can go around the track at speed U without the aid of friction or other forces other than the perpendicular contact force from the track surface. Find an expression for the required banking angle 0 of the track, measured from the horizontal. Express the answer in terms of m, R, U, and g. Suppose the race cars actually round the track at a speed W > U. What additional radial force F, is required to keep F, = the cars on the track at this speed? Express the answer in terms of m, R, U, W, and g.
Expert Solution
Step 1: Given information:


The mass of the car "m"

The radius of the track "R"

The velocity with which the car takes the turn "U'

Let us draw the free body diagram of the given scenario:

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